3945747336612 has 12 divisors (see below), whose sum is σ = 9206743785456. Its totient is φ = 1315249112200.

The previous prime is 3945747336547. The next prime is 3945747336617. The reversal of 3945747336612 is 2166337475493.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (3945747336617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164406139014 + ... + 164406139037.

It is an arithmetic number, because the mean of its divisors is an integer number (767228648788).

Almost surely, 2^{3945747336612} is an apocalyptic number.

It is an amenable number.

3945747336612 is an abundant number, since it is smaller than the sum of its proper divisors (5260996448844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3945747336612 is a wasteful number, since it uses less digits than its factorization.

3945747336612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328812278058 (or 328812278056 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 60.

The spelling of 3945747336612 in words is "three trillion, nine hundred forty-five billion, seven hundred forty-seven million, three hundred thirty-six thousand, six hundred twelve".